package cn.tedu.myboot33.mapper;

import cn.tedu.myboot33.entity.MyUser;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

@Mapper
public interface UserMapper {
    @Select("select * from user where username=#{username}")
    MyUser check(String username);//只有一个对象所以不用集合
}
